| Mon - Fri: | 8:30am - 5:30pm |
| Saturday: | 9:00am - 3:00pm |
We are able to offer a wide range of Engine performance upgrades for the UK 2.5 Impreza STI. Starting with a straight forward Remap all the way to a big power full engine build. We were the first UK Company to work with Subaru's 2.5 EJ257 engine in early 2004 so we have a full understanding of its strengths and weak points.
With our long term Subaru experience and high quality parts we know what is required to give a reliable and cost effective route to improving the performance of your car. Below are some of the popular conversions we offer but we can also put together a bespoke package to suit customers' needs. We also have a wide range of performance parts available from our online shop.
Custom Engine remapping with the latest ECUTEK software costs £600 Inc. VAT with a new Licence (or £420 Inc. VAT if the ECU has an ECUTEK licence installed).
Note: Some older cars may require the fuel pump to be upgraded to reliably cope with the extra power. We charge £160 inc. VAT to install a High Flow fuel pump.
We have a huge amount of experience with building new 2.5 engines that will be able to handle more power reliably. Since 2004 we have arguably carried out more 2.5 conversions than anyone else with our successful Type-25 models and a range of performance engine for other customers.
This experience of building numerous high power 2.5 engines means we know what parts work and we have custom made parts to solve specific problems.
If you would like to know more about how a 2.5 engine build might suit you please feel free to contact for more information.

We have a huge range of performance upgrades for the 2.0 Japanese STI engine ranging from our Twinscroll Milltek exhaust all the way to our latest Twinscroll turbo options. We have imported every type of JDM STI including the special editions like the S204 and Type RA-R. Our Mark II Type-25 was based on the 2006+ JDM STI and Spec C. In 2006 we won the inaugural Time Attack Championship Pro Class with our 2006 Spec C. Our Spec C's also took first place in the 2005 and 2006 Tuner GP.
Please contact us for more information.